Improvement in mining-pumps



I TTNITED STATES PATENT DFFIGE.

GEORGE E. MILLS, OF NEW YORK, N. Y.

IMPROVEMENT IN MINING-PUMPS.

Specification forming part of Letters Patent No. 138,037, dated April 22, 1873; application filed January 13, 1873.

To all whom it mayconcem:

Be it known that I, GEORGE E. Mums, of the city, county, and State of New York, have invented certain new and useful Improvements in Mining-Pumps---counterbal-v anced, double cylinder, and independent action; and the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing making a part of this specification, in which Figure 1 represents a side view, sectional elevation, of my improved double-cylinder counterbalanced mining-pump. Fig. 2 shows an edge or end view elevation of the same. Fig. 3 shows a top view of the clamp-bars and walkingbeam, and the method of attaching the workin g apparatus to the discharge-pipes, forming the frame-work of the pump. Fig. 4 shows an enlarged side view of the same broken off at the ends. Fig. 5 shows a top view of the cap or cover of the enlarged double reservoir for water between the valve-cylinders and elevated discharging-pipes.

My invention relates to suction and force pumps to be used in deep excavations and mines, where sometimes large quantities of water have to be elevated to the surface, and a constant flow or discharge kept up; and it consists of the movable sliding sleeves in combination with a double-acting suction and force pump, and also in the manner of attaching the walking-beams to the clamps and the clamps to the tubes so that they may be adjusted accurately to the length of the connecting-rods, thereby dispensing with bucklejoints; and any required number of walkingbeams can be puton and secured without disturbing the discharge pipes, and the pump placed and worked in the deepest mine with very little or no fastenings to the sides of the shaft; and,furthermore, when the pump needs repairs, one rod can be uncoupled from the lower walking-beam and the other pump be kept working to relieve the water in the mine, and cause but little delay, which is in most mines very essential; and there are other advantages over the ordinary mining-pump which it is not deemed necessary to mention.

To enable others to make and use my invention, I will describe it more in detail, referrin g to the drawing and the letters marked thereon.

The water chambers or reservoirs A A are made of cast-iron or other suitable material, with the cylinders B B cast on them, of any required length, to be bored out for the valvepistons or plungers O O to slide in. There are flanges b 12 cast on the lower ends of the cylinders B B to secure the suction-pipesD D, in

which the lower valves d d are placed, there being a man-hole and cap, e, on one side of each pipe, for the purpose of placing the valve d and easily relieving it from any obstruction. Below the man-hole and valve is a sliding sleeve, E, to adjust in the sunken well to convey the water to the suction-pipe D the two reservoirs A A being divided by a partition, a, and provided with covers F F to fit water-tight, which are firmly secured to the pump by screws or bolts, and have stuffing-boxes ff on the top, through which the plungerrods c 0 pass to connect with the lower rods 9 9 that operate the pump. The

covers F F of the reservoirs A A are provided with projecting sockets I I, in which are fitted cone-valvesi i, and to which sockets the eduction-pipes G G are secured by flanges on the bottom bolted to the cap; they, being the ordinary iron pipe, may be of any required size, and may be coupled together in the ordinary manner, to extendup from any depth, so as to discharge the water at any place above the surface. The vertical pipes Gr G may be connected together at the top, so as to have but one opening, 1, for the discharge, or they may discharge separately, they being firmly secured together at suitable intervals by the clamp plates or bars H 11,011 which the walking-beams K K are hung on a tapering arbor or shaft, h.

In order to secure the greater strength of the frame for supporting the walking-beams and working mechanism, plate-flanges may be secured to the bottom of the vertical dischargepipes, and bolted firmly to the cover-plate F.

Miningpumps constructed as above described can be made and put in operation for less cost than those single ones most commonly used; they work much easier, being near perfectly counterbalanced, will raise and discharge double the quantity of water in a given time, with about the same power required to work a single-cylinder pump; are more easily kept in working order, and one cylinder can be worked while the other is undergoing repairs,

and no time lost for water to accumulate in h, in combination with the vertical tubes GG, the 'mine. through which the Water is elevated for con- Having thus described my invention, what structing the frame of mining-pumps, substan- I claim, and desire to secure by Letters Pattially as herein shown and described.

ent, is In testimony whereof I hereunto subscribe 1. The two water-reservoirs A A, as conmy name. structed and combined with the double cylin- GEORGE E. MILLS.

ders B B, valve-plungers O O, suction-pipes D D, and the movable sleeves E E substantially Witnesses: as herein shown and described. AsA H. KING,

2. The clamping-bars H H, tapering arbor B. W. STUDLEY. 

